196 results about "Engine displacement" patented technology

Cylinder deactivation is a proven solution to improve engine fuel efficiency. The present invention is related to Dynamic Cylinder Deactivation (DCD) solution to conventional internal combustion engine. DCD is an energy saving method based on engine thermodynamics and residual heat recovery. It deactivates all the cylinders within the engine alternatively and dynamically, totally different from traditional sealed-valves cylinder deactivation solutions. DCD has many advantages over traditional sealed-valves cylinder deactivation. Thermodynamic efficiency gain, residual heat recovery, high Lambda and “Air-Hybrid” are the most attractive features of DCD. DCD also makes engine displacement variable.

In some examples, reduced engine displacement reduces an engine's ability to provide brake booster vacuum. The present application relates to intake systems including a vacuum aspirator to generate vacuum.

A method of regulating displacement in a displacement on demand engine includes determining a desired engine displacement and determining a current engine displacement. The method further includes adjusting activation of a first cylinder to partially achieve the desired engine displacement and subsequently adjusting activation of a second cylinder to fully achieve the desired engine displacement from the current engine displacement. The method adjusts activation of the cylinders one at a time to reduce vibration in the engine.

An exhaust temperature raising apparatus has an exhaust throttle valve that adjusts the engine exhaust amount based on the amount of throttling, and an injector that performs main injection and a sub-injection directly into a cylinder, a combination of an ECU, the injection and the exhaust throttle valve as exhaust gas temperature increase apparatus for, during an engine warm-up, performing and controlling the exhaust throttling by the exhaust valve and performing and controlling an exhaust gas temperature increase through combustion attributed to the main injection performed in an excess-air condition and combustion attributed to the sub-injection, an exhaust gas temperature sensor that monitors a state of temperature increase of the exhaust gas caused by performance of the exhaust gas temperature increase apparatus, and the ECU as monitor abnormality detection apparatus for determining whether the exhaust gas temperature sensor has an abnormality, and the ECU as exhaust gas temperature increase stop apparatus for stopping the operation of the exhaust gas temperature increase apparatus when the ECU determines that the exhaust gas temperature sensor has an abnormality.

A system for supplying power with a combustion engine includes an engine having fuel and air intake lines, and an exhaust line. The engine has a combustion chamber volume defining a number of liters of engine displacement. A fuel cell has a gas outlet that communicates with the air intake line, and selectively produces hydrogen and oxygen gases through an electrolysis process. An oil pressure sensor communicates with the engine to sense when the engine is operating. A switch communicates with the sensor and is closed when the sensor senses that the engine is operating. The switch is open when the sensor senses that the engine is not operating. A battery communicates with the fuel cell and selectively supplies electrical power for the electrolysis process when the switch is closed.

Exhaust emission control is exercised to restrict the exhaust amounts [g] of HC, CO, NOx, and the like. However, since the intake air amount for startup unduly increases due to an engine speed overshoot for startup, the exhaust amounts of HC, CO, and NOx increase excessively. Therefore, there is a need for optimizing the intake air amount for startup. The present invention proposes an engine startup control method that assures excellent startability and low exhaust emissions (small gas amount). Disclosed is an engine control device for starting an engine (from its stop state). The engine control device includes a section for setting a target engine operating state of each combustion; a section for detecting an actual engine operating state of each combustion; and a section for computing a control parameter for each subsequent combustion in accordance with the target engine operating state of each combustion and the actual engine operating state of each combustion.

An engine capitalizes on the advantages of alternative fuels such as ethanol, E-85, and other alcohols, with a small displacement engine, two cylinders or more, and at least a divided fuel tank or alternatively two tanks. An electronic engine control module selects the fuel for operating conditions and delivers the fuel through separate injection systems. The module selects unleaded gasoline for starting, light load and light cruising conditions. Upon greater demands for engine power, the module adds or switches entirely to a secondary fuel such as alcohol, ethanol, E-85 or other ethanol / gasoline blends and reduces or eliminates the introduction of gasoline fuel. The secondary fuel provides more power than unleaded gasoline, thus reducing the engine displacement required for operating a vehicle under a variety of loads. The present invention seeks a substantial engine power increase, reduction in engine detonation, improved cold starting, re-evaluation of turbochargers, a decrease in gasoline consumption, and gasoline as the default fuel.The engine control system allows a small and efficient engine to deliver increased power upon demand over conventional automotive engines. The system modulates boost pressure when using a secondary fuel for operations at an increased power level. The power level increase occurs from the combination of lower stoichiometric, or higher octane, fuel and increased dynamic intake pressures. The system maintains engine power as low, with little or no intake boost pressure, and the gasoline, 85 octane minimum, is delivered through injectors. When higher power is demanded, the system increases boost pressure, at intake, while a secondary power fuel (ethanol, E-85, alcohol and the like), is injected.

A vehicle drive system comprising of a variable displacement engine including a plurality of cylinders, where at least one of the plurality of cylinders selectively deactivates to decrease engine displacement; a torque converter operatively coupled to the variable displacement engine configured to operate with variable slip; a driver interface for receiving a preference setting from a driver; a control system for receiving the driver preference setting, and adjusting torque converter slip based on the driver preference setting.

A mechanism based on time control for opening the gas inlet valve of piston compressor is composed of external and internal barrels and an internal rotary axle. The continuous pressure oil coming from oil supply system is regulated by an oil pressure distributor to become pulsive pressure oil and then outputted via oil outlet. The axial movement of internal sleeve barrel can change the relative position of oil outlet to oil pressure acting region and in turn the hydraulic action time and durable open time of gas inlet valve. The longer the open time, the more the gas refluxes in cylinder and the less the gas to be actually compressed, so changing the displaced volume of compressor in stepless mode.

The invention discloses a control method of an operating point of a hybrid electric vehicle engine. In the control process of the engine operating points, a hybrid control unit (HCU) adjusts and selects the best operating points of the engine in auxiliary drive state and in generating state respectively according to the state of charge (SOC) of power battery, and determines the necessity for actually adjusting the operating points of the engine by comparing ISG motor combined efficiency with the ratio relation between fuel consumption difference and energy consumption difference before and after the adjustment of the engine operating points. The technical proposal of the invention can bring the following advantages: (1) reducing engine displacement, thus effectively reducing emission and fuel consumption; (2) carrying out generation and auxiliary drive of the ISG motor according to the state of power battery, thus adjusting the engine operating points, improving work efficiency of theengine, and improving power performance; (3) synthesizing each system efficiency of the system, carrying out arbitration on overall efficiency of the system, and excluding the operating points withoutneed for adjustment.

The invention provides a method and an apparatus for automatically identifying vehicle configuration through a VIN code of a passenger vehicle. The method comprises the steps of creating a vehicle VIN code analysis table in a database; in the vehicle VIN code analysis table, establishing correlations of 1-m bits of VIN codes of different manufacturers, production countries, the manufacturers and vehicle types; establishing correlations of m-n bits of the VIN codes of the different manufacturers, engine displacements, fuel types and transmission types; establishing correlations of p bits of the VIN codes of the different manufacturers and vehicle production time; receiving a VIN code input instruction of a user, and automatically performing comparative matching on the VIN codes, and vehicle brands, vehicle names, the vehicle production time, the engine displacements, the fuel types and the transmission types in the VIN code analysis table of the database; and if the matching succeeds, displaying vehicle configuration information to the user through a query interface. The problem of high error rate of conventional vehicle information manual input is solved.

The present disclosure provides an engine operating method and high power density internal combustion engine, including an engine housing with a plurality of cylinders. Fuel injectors are provided and disposed at least partially within each cylinder, and configured to inject fuel such as diesel, JP8 or another fuel therein for compression ignition. The engine is configured to burn a quantity of injected fuel to yield at least about 150 horsepower per liter of engine displacement at a smoke output of less than about 0.4 grams, and in some cases less than about 0.75 grams, smoke per horsepower-hour, at a fuel consumption of less than about 250 grams fuel per kilowatt-hour output of the engine.

The invention relates to a decision tree classification and fault code classification-based vehicle remote diagnosis and spare part retrieval method and belongs to the information retrieval field. Since the branch group numbers of different spare parts are still different even under a condition that main group numbers of the spare parts are identical, the objective of the invention is to realize exact matching of the spare parts. According to the technical schemes of the invention, fault codes are identified and classified; vehicle VIN codes are analyzed, so that variables can be obtained, wherein the variables include engine displacement, vehicle body type and engine transmission type which are obtained through VIN code analysis; decision tree analysis is carried out on spare part codes corresponding to the variables, variable data classification is completed, and spare part information is formed, indexes are established, and a diagnosis knowledge library is formed; a linguistic model is created, a cell word library is built, word switched retrieval is carried out on cell words are in the cell word library, and the cell words are arranged, a diagnosis database of work items corresponding to the fault codes is formed through the decision classification of a decision tree model; and the diagnosis database is associated with the diagnosis knowledge library, primary keys are built. With the method and device of the invention adopted, after the fault codes are obtained, solutions of common faults and corresponding spare parts and work items can be found out fast.

This invention relates to one single or double cylinder capacity control compressor, which comprises one double cylinder compressor with double liquid storage and one volume switch device, wherein, the said compressor blades chamber adopt sealed structure connected to one gas control pipe; at double gas entrance, gas cylinder sealed blade chamber and high voltage discharge tube are passed with one or two four-way valve for controlling gas pressure difference to realize the switch between single cylinder compressor and double parallel compression to get discharge volume from cylinder discharge volume.

The invention relates to a clearance-fixing device for changing stroke regulation of a linear compressor, comprising a venting plug internally which is provided with a cavity and arranged in front of a piston in a cylinder of the linear compressor, a gap between the venting plug and the cylinder of the compressor, a gap between the piston the cylinder of the cylinder of the compressor, an air release valve arranged at the tailing end of a chamber in the venting plug, a flexible exhaust pipe arranged at the front end of the chamber in the venting plug, a connecting piece fixed at the front end of the venting plug and a venting plug position regulation and execution mechanism connected with the connecting piece and fixed on an inner end face of a cylinder cover; wherein the venting plug position regulation and execution mechanism is an electric execution mechanism, a pneumatic execution mechanism or a hydraumatic execution mechanism; when the compressor needs to carry out load regulation, a control system regulates air displacement by changing stroke of the piston and the venting plug position regulation and execution mechanism is employed to regulate the position of the venting plug, so that certain clearance is kept in the process of piston compression and relatively high compressor volumetric efficiency can still be maintained in the process of stroke regulation.

The invention discloses a solid propellant flameout critical pressure reduction rate testing method. The method includes the following steps: a high pressure nitrogen gas cylinder serves as a gas source, initial pressure is provided for a testing sample in a burning chamber through a booster pump, the pressure in the burning chamber rises to a threshold value through fuel gas after the sample is lighted, a high pressure electromagnetic valve is opened, and gas discharging is adjusted through the gas discharging amount. A data collection control system records changes of the pressure and the light strength in the burning chamber in the experiment process, the gas discharging amount is adjusted according to the calculated pressure descending rate and the condition whether the sample extinguished or not, and an experiment is performed again. According to the solid propellant flameout critical pressure reduction rate testing method, the problem that the initial pressure in the prior art is large in fluctuation is solved; by means of the method, the minimum flameout pressure reduction rates of different formula propellants under a certain pressure can be tested, the solid propellant flameout critical pressure strength under a certain condition can be tested, the testing range in the prior art is expanded, and the method can be used for testing the solid propellant pressure reduction flameout performance of energy management type tactical missiles and rocket projectiles.

The invention discloses control system and method of a baking furnace. The baking furnace comprises a flue for discharging exhaust. The control system of the baking furnace comprises a carbon monoxide detection module and a control module, wherein the carbon monoxide detection module is arranged in the flue for detecting carbon monoxide content of the exhaust in the flue, the control module comprises a first judging module and a first adjusting module, the first judging module is used for judging whether the detected carbon monoxide content is more than a preset first threshold value, and thefirst adjusting module is used for adjusting the supply to at least one of the fuel supply, the intake quantity and the exhaust quantity of the baking furnace according to the judgment of the first judging module.

The invention provides an agitating lorry upper-installed driving system and an agitating lorry upper-installed driving control method. An agitating lorry comprises a vehicle chassis and an agitatingbarrel arranged on the vehicle chassis. A main engine is arranged on the vehicle chassis. The agitating lorry upper-installed driving system comprises a motor device, a battery assembly and a power generation device. The motor device is in transmission connection with the agitating barrel so that the agitating barrel is driven to rotate through the motor device. The battery assembly is in electricconnection with the motor device. The power generation device is in electric connection with the motor device and provides electric energy for the motor device, and the power generation device is inelectric connection with the battery assembly so that the battery assembly is charged by the power generation device. According to the technical scheme, the agitating lorry upper-installed driving system can run independently and do not need to rely on output power of the main motor of the agitating lorry; working efficiency can be improved efficiently, and the agitating quality of concrete is prevented from being influenced by stop of agitating barrel rotation caused by insufficient power; besides, load of the main motor does not need to be increased, and reduction of main engine emission andpollution emission is benefited; and the cost is lowered.

A method for controlling airflow in an intake manifold of a multiple-displacement engine during an engine displacement mode transition includes determining, before a displacement mode transition, a post-transition mass air flow rate necessary to maintain a pre-transition engine torque output, as well as an airflow transient multiplier based on engine speed and an estimated post-transition manifold air pressure. After multiplying the requested mass air flow rate with the transient multiplier, the resulting compensated requested mass air flow rate is divided by a maximum mass air flow rate to obtain a requested percent airflow. The percent airflow is thereafter used with engine speed to determine a requested post-transition manifold air pressure-to-barometric pressure ratio, for example, using a lookup table; and the requested post-transition pressure ratio is used to determine a transient post-transition throttle position, to which an engine throttle will be moved upon initiating the displacement mode transition.

The invention relates to a variable displacement automobile air conditioning compressor system and a control method, and belongs to the technical field of variable displacement automobile air conditioning compressors. The variable displacement automobile air conditioning compressor system is that a control piston is arranged at the other end of the existing compression piston mechanism, corresponding to a compression cavity; the compression cavity is divided into three chambers through the control piston and a compression piston in the compression piston mechanism; the medium chamber between the control piston and the compression piston is connected with an air inlet of a condenser through an exhaust pipeline; the control piston is connected with a stepping motor through a transmission mechanism and controlled by an engine ECU; the engine ECU controls the stepping motor according to the required refrigerating capacity to drive the control piston to move, so as to change the air volume of the compression cavity; therefore, the displacement can be changed when the exhaust pressure is unchanged, and as a result, the refrigerating capacity can be changed as requirement. According to the variable displacement automobile air conditioning compressor system, the compression cavity end part is changed a little based on the original fixed displacement; the complex inclined plate structures and electronic valve control systems of most of the current variable displacement compressors are saved; the mechanism is simple.

The invention discloses a thermocompressor. The thermocompressor comprises a driving unit, and a first cooler (13), a heat regenerator (14), a heater (15), a pulse tube (16) and a second cooler (17) which are connected in turn, wherein the driving unit comprises a cylinder (9) and linear motor-piston components which are arranged in the cylinder. Two same linear motor-piston components which are provided with double-ended pistons respectively are symmetrical relative to a radial centerline of the cylinder; a first communicating tube (12) communicates two ends of a wall of the cylinder; a first working chamber (4) is communicated with the first cooler through a first outlet (5a); a second working chamber (8) is communicated with the second cooler through a second outlet (5b); two linear motors drive the two double-ended pistons to reciprocate reversely in the cylinder respectively to drive a pulse tube refrigerator to work. The linear motors are symmetrical, so that the air displacement is large, the inertia forces of the pistons when the pistons move are balanced, and the pistons have small vibration when running; and the front and back differential pressures of the pistons are the same to facilitate reducing mechanical vibration.

Disclosed is a liquid processing apparatus, a liquid processing method and a storage medium capable of increasing the number of arranged substrate retainers without increasing the total exhaust amountof the liquid processing apparatus. A N-number (N is an integer identical to or greater than three) of cup bodies are inhaled and exhausted in total exhaust amount E through a plurality of separate exhaustion passage each having a first damper, and through a common exhaustion passage connected in common downstream of the separate exhaustion passages. The first dampers are configured such that anexternal air is received from the cup body in a first intake amount of external air E1 for one of the cup bodies where a chemical liquid nozzle is placed at a setting location facing a wafer, and an external air is received from each of the other cup bodies in a second intake amount of external air E2 less than the first amount E1 and the intake amount of external air from both each of the other cup bodies and each of branched passages equals (E-E1) / (n-1).

The invention discloses an oil injection control system for an engine. The system comprises the steps of: after electrification, first, calculating a target displacement of a high pressure oil track; when the target displacement is greater than the displacement threshold value, triggering to start displacement and injection control, or, judging the cylinder; after cylinder judgment is successful and the high pressure oil track meets the target oil track pressure, controlling normally to start fuel injection; under displacement injection control mode, controlling displacement injection with narrower displacement pulse width injection control signals when engine rotating speed signals exist and high pressure oil pump starts pumping oil; if, the displacement injection total amount is greater than the target displacement amount, and the cylinder judgment is successful and the high pressure oil track meets the target oil track pressure, controlling normally to start fuel injection. The oil injection control system for the engine can effectively improve the influence of residual air in the high pressure oil track to actual starting oil injection amount, improves the precision of fuel injection in the starting stage, and avoids start failure.

The invention discloses a displacement stepless regulation system of a reciprocating compressor. The system comprises an explosion-proof hydraulic oil station, a hydraulic distributor, a servo motor, a reduction gearbox of the servo motor, an unloader, an explosion-proof control box, a sensor, a crankshaft encoder, etc. With the system added, the air displacement of the large reciprocating compressor can be regulated steplessly and continuously. At the same time, the electricity consumption of the compressor is reduced with the reduction of the air displacement. In the operation process of the compressor, the distributor always maintains one half of speed strictly and rotates synchronously with the reciprocating compressor. A periodic pressure pulse wave generates from high pressure hydraulic oil output from the oil station after the effect of the hydraulic distributor. The cycle length of the pressure pulse wave is the same with the rotary period of the compressor. The starting point of every period is before the compressing stroke of the reciprocating compressor and the pressure effect time and the pressure pulse width can be regulated. With the explosion-proof design adopted, the regulation system can be applied to the reciprocating compressor that is used in an explosive gas area (explosion-proof class: EExd II CT4).

A poppet valve engine incorporates a single rotary combustion chamber serving multiple cylinders to decrease emissions and increase thermodynamic efficiency. Virtually zero emissions are achievable by on-board fuel reforming to hydrogen. Limited heat range exposure of the rotary combustion chamber, low temperature combustion, and ceramic coatings reduce heat loss while three stage combustion, intake and fuel preheating, and fuel reforming reduce combustion process irreversibility. A supercharger increases the power density to allow engine displacement reduction. A z-crankshaft assembly coupled with a pre-combustion chamber allow knock-less and stable hydrogen combustion at virtually all load and speed conditions. Variable compression, possible in certain configurations of the z-crankshaft assembly, further increases thermal efficiency.

The invention discloses a realizing method for improving the exhaust capacity of air inlet and exhaust valves. On the basis of establishment of streamline mathematical models of the air inlet and exhaust valves, as for a water supplying system, the theoretical exhaust quantity is calculated, the types and specifications of the conventional air inlet and exhaust valves are determined, and the exhaust flow coefficients are calculated; and the same specification of the section-variable air inlet and exhaust valves with exhaust flow channels being in a streamline shape are designed, the actual exhaust quantity and the actual exhaust flow coefficients are tested, recorded and calculated on an exhaust performance test platform. Experiments prove that the exhaust capacity of the section-variableair inlet and exhaust valves is obviously improved, thus under the premise of meeting the exhaust requirements, the diameter and the number of the air inlet and exhaust valves can be decreased, investment is lowered, the anti-cavitation performance of inner components is improved, the service life is prolonged, and the pipe-bursting accident caused by improper type selection of the air inlet and exhaust valves is avoided; and the viewpoint that the internal and external pressure differences of the air inlet and exhaust valves are different, and thus the exhaust flow coefficients of the air inlet and exhaust valves are also different is put forward and verified for the first time, the basis is provided for improvement of type selection standards and formulation of production technical standards in the water supply industry in China, and the realizing method is of great significance to ensure safe operation of pipelines.

The invention provides a fault code diagnosis vehicle item and spare part retrieval method based on FP-Tree sequential pattern mining, and belongs to the field of information retrieval. The technical key points are that vehicle VIN codes are analyzed so that variables are obtained, wherein the variables include engine displacement, the vehicle body type and the engine gearbox type which are obtained through analysis of the VIN codes; decision tree analysis is performed on spare part codes corresponding to the variables and variable data classification is completed to form spare part information, and indexes are established so that a diagnosis knowledge base is formed; step four, a frequent item set of the corresponding relation of the fault codes and the replacement spare parts is created through an FP-Tree algorithm according to an affair database; topological searching is performed by utilizing the topological relation between the position of the spare parts and the ECU position of the faults, and the frequent item set is selected; the corresponding relation between the spare parts and maintenance items is constructed so that a diagnosis database of the corresponding items of the fault codes is formed; and the diagnosis database is correlated with the diagnosis knowledge base, and a primary key is established. The effects are that the solutions for the common faults and the corresponding spare parts and the items can be quickly found after acquisition of the fault codes.

The invention discloses a method for calculating blown gas displacement of a two-stroke low-speed diesel engine for a boat. The method comprises the following steps: calculating blown gas flow rate, exhausted smoke flow rate and amount of gas discharged to an exhausted smoke collection box in different stages of a ventilation process in real time by adopting a mathematic model; calculating the amount of waste gas freely exhausted in single circulation, gas input and output quantity during a gas blowing process and the amount of exhausted gas during a post-exhausting process by utilizing an ideal gas state equation in combination with a gas distribution phase position; obtaining the blown gas flow rate and the exhausted smoke flow rate according to the quantity and rotating speed of air cylinders of the two-stroke low-speed diesel engine for the boat. The method disclosed by the invention can be used for rapidly and accurately predicting the blown gas flow rate and the exhausted gas flow rate, is high in universality and provides reliable data support for analyzing the working state of the diesel engine and improving the performance of the diesel engine.